20213365520

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{797057}}^1$

素因数の和:797387

約数の個数: 40

約数和(自身を含む): 47144386584

約数和(自身を除く): 26931021064

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 1268, 1585, 2536, 3170, 5072, 6340, 12680, 25360, 797057, 1594114, 3188228, 3985285, 6376456, 7970570, 12752912, 15941140, 31882280, 63764560, 252667069, 505334138, 1010668276, 1263335345, 2021336552, 2526670690, 4042673104, 5053341380, 10106682760, 20213365520]

約数ペア:

[(1, 20213365520), (2, 10106682760), (4, 5053341380), (5, 4042673104), (8, 2526670690), (10, 2021336552), (16, 1263335345), (20, 1010668276), (40, 505334138), (80, 252667069), (317, 63764560), (634, 31882280), (1268, 15941140), (1585, 12752912), (2536, 7970570), (3170, 6376456), (5072, 3985285), (6340, 3188228), (12680, 1594114), (25360, 797057)]